gaussbeam computes the space window function of a gaussian beam of FWHM Fwhm. For a sky of underlying power spectrum observed with beam of given FWHM, the measured power spectrum will be where is given by gaussbeam(Fwhm,Lmax). The polarization beam is also provided (when Dim > 1) assuming a perfectly co-polarized beam (eg, Challinor et al 2000, astro-ph/0008228)
beam = gaussbeam(5.,1200) |
beam contains the window function in {0,...,1200} of a gaussian beam of fwhm 5 arcmin
Version 3.82, 2022-07-28